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Finding the Fourth Proportional to 7,485.55, 11,229.32 and 2,553.86

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Solution

The fourth proportional to 7,485.55, 11,229.32 and 2,553.86 is: 3,831.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.55 : 11,229.32 = 2,553.86 : x
  2. Step 2: Convert to fraction form
    7,485.55/11,229.32 = 2,553.86/x
  3. Step 3: Cross multiply
    7,485.55x = 11,229.32 × 2,553.86
  4. Step 4: Simplify right side
    7,485.55x = 28,678,145.63
  5. Step 5: Solve for x
    x = 28,678,145.63/7,485.55
  6. Step 6: Final answer
    x = 3,831.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.